Amarine-made Blue LED Light Indicator; Waterproof 4 Gang Rocker Switch Panel +Double USB Power Charger Adapter + 12V Cigarette Lighter Socket for Marine Boat CarMarine(PN-R4S2) Blue LED light indicator; Waterproof 4 gang rocker switch Panel +Double USB Power Charger Adapter + 12V Cigarette Lighter Socket for Marine Boat Car Switch are marine-grade; waterproof and approve Rhos and CE, Totally friendly-environment. Easy to install: only put this in to the switch hole, fix it with screws and then you can begin to use it. Panel comes with pre-wired, mounting screws and a set of 100 piece labels;wiring instructions Number of Switches: 4 Stainless Steel Screw: 6 pieces